3658247

Information

• Patent Grant
• 3658247

• References
• Source

• Patent Number

  3,658,247

• Date Filed

  Not available

• Date Issued

  Tuesday, April 25, 1972
  52 years ago

• CPC

  • E01B9/303 - the clip being a shaped bar
  • E01B3/36 - Composite sleepers

• US Classifications

  • 238 - Railways: surface track